For some people, going bald or experiencing thinning hair can have a significant impact on mental wellbeing and self confidence. Madeleine Finlay speaks to Rudi Zygadlo about how it affected him and what he eventually did about it, and to consultant dermatologist and hair specialist Dr Sharon Wong about what exactly is going on when our hair thins, which treatments are available to help, and what we can expect from new technologies in the pipeline. Help support our independent journalism at theguardian.com/sciencepod